The most common and most likely answer to this crossword clue is the 7 letter word UNCLASP
I've seen this crossword clue in The Times
U
N
C
L
A
S
P
More clues leading to the result UNCLASP
- Clans moving in on horseback, free from restraint
- Free relative briefly pursued by snake
- Release Papa’s brother – like Papa, lacking energy
- Release relative, not entirely a killer
- Open can’s pull almost broken
- Note almost discordant sound in revolting release
- Release pressure after clan riot in America
- Remove snake after relative loses a bit of equanimity
- Let go of relative, back off when posturing starts
- Release snake, it goes under fence, mostly
Buddy explains!

The straight part
We know that "Free" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case free = unclasp.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does UNCLASP mean?
UNCLASP verb- To release the clasp from something
- To become unfastened
- To separate from being clasped